Jock:

Many people swear by a 30" or 36" by 80" flat faced door sitting on two tall sawhorses. No plans needed. Get some short cabinets to use in place of the sawhorses if you want storage.

I go with the cabinets for mine, but I use formica faced counter tops for the bench surface. Costs more, but it's almost impossible to damage one, and CA just pops right off when you have a spill.

HTH.

Bill.